Daniel 6:9 - John Gill's Exposition of the Entire Bible

Wherefore King Darius signed the writing and the decree. Moved to it by the number and importunity of his principal men; and chiefly through affectation of deity, which this law gave him; and that he might have an opportunity of ingratiating himself into his new subjects by his munificence and liberality, not being aware of the snare laid for his favourite, Daniel.